I'm trying to use the System ACE CF feature of the nice Xilinx ML401 board, but mysteriously, my .ace files doesn't work. Instead it results in the shiny red "Err" LED.
I have a very simple "blink LED" style design that works fine when programmed over JTAG. Every configuration option has been left at their default value (except the start up clock where I tried both JTAG and CCLK). Impact happily generated my .ace file which was roughly the same size as the "system_my_ace.ace" that it overwrote, but when that entry is chosen from the ML401's bootloader, it fails loading.
I haven't been able to find much documentation; with some digging I found the DS080 "System ACE CompactFlash Solution", but it didn't cast light on this problem.
To add insult to injury, I reformatted the CF under Windows and unzipped the SystemACE_CF.zip recovery image and now nothing from the CF works, not even the bootloader. (This is with the Xilinx supplied CF card).